Results 71 to 80 of about 3,271 (259)

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering
AbstractDouble‐wheel trench cutters display reduced efficiency while cutting through hard or extremely hard rock strata, leading to significant wear on their picks. A high‐pressure water jet‐pick combined rock‐breaking method (HPC) for double‐wheel trench cutters is proposed, addressing the challenges of low efficiency and high pick wear when cutting ...
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
openaire   +2 more sources

Natural Negative Feedback Loops Confer Indica‐Japonica Differentiation for Grain Size Homeostasis in Rice

Advanced Science, EarlyView.
This study reveals the genetic and molecular mechanisms controlling grain size homeostasis through fine‐tuning OsGRX8 self‐expression by two natural negative feedback loops functioning in redox‐dependent or ‐independent manners and identifies two self‐regulatory haplotypes (SRHs) for the subspecies differentiation in rice.
Xingxing Li, Meng‐en Wu, Ziqi Qiao, Junkui Huang, Juncheng Zhang, Yang Ding, Junqing Zhu, Jingyue Xu, Yuxin Huang, Wei Li, Xiaomin Su, Yue Ding, Jianwei Zhang, Yibo Li   +13 more
wiley   +1 more source

Discovery of an Adaptive Neuroimmune Response Driving Itch and Fast Tick Removal with Implications for Preventing Pathogen Transmission

Advanced Science, EarlyView.
Doehl et al. discovered an adaptive neuroimmune mechanism that induces itch in tick‐exposed guinea pigs, enabling rapid tick removal. This itch‐induced tick removal (IITR) is mediated by an adaptive cellular immune response and is independent of IgG, IgE, or TRPV1.
Johannes S. P. Doehl, Tiago D. Serafim, Serena Doh, Charles S. Grugan, Eva Iniguez, Luana Rogerio, Ronja Frigard, Ranadhir Dey, Pedro Cecilio, Xinglong Gu, Pang‐Yen Tseng, Aline da Silva Moreira, Mahnaz Minai, James Oristian, Hans Ackerman, Steven Brooks, Caroline Percopo, Siu‐Ping Ng, Derron A. Alves, Lucas Tirloni, Jennifer M. Anderson, Adriana Marques, Fabiano Oliveira, Shaden Kamhawi, Daniel E. Sonenshine, José M. C. Ribeiro, Mark Hoon, Jesus G. Valenzuela   +27 more
wiley   +1 more source

Cytokine‐Engineered Chimeric Antigen Receptor‐T Cell Therapy: How to Balance the Efficacy and Toxicity

Advanced Science, EarlyView.
Cytokine‐engineered CAR‐T cells represent a promising immunotherapy against malignancies due to direct tumor killing and potent immunity response. However, significant toxicities, including CRS and ICANS, have restricted clinical applications. How to keep the risk‐benefit balance of the advanced therapy is of great importance for maximizing the benefit
Xinru Zhang, Gulizeba Aimaiti, Yuanye Guan, Yuzhe Sha, Wei Zhou, Jiefeng Shen, Bo Zhao, Wei‐En Yuan   +7 more
wiley   +1 more source

Rock breaking law of TBM hob assisted by low pressure abrasive air jet grooving

Meitan xuebao
The application of full-face tunnel boring machine (TBM) in mine mining is gradually popularized. There are some problems in the construction of tunnels with hard surrounding rocks, such as difficulty in tunneling and serious tool loss.
Hongtu ZHANG, Yaopu YANG, Yong LIU, Jianping WEI, Zhiping LI   +4 more
doaj   +1 more source

Reaction Mechanism, Challenges, and Strategies of High‐Energy‐Density Sodium‐Ion Batteries

Advanced Science, EarlyView.
Focusing on high‐energy‐density sodium‐ion batteries, this review highlights the advantages offered by conversion‐type cathode materials. The currently studied cathode materials are systematically introduced. By analyzing sulfur, oxygen, and transition metal halides and other conversion‐type cathodes, the key challenges associated with these cathodes ...
Dan Yu, Yuxin Cui, Qinghao Chen, Lu Gao, Xia Liu, Tianci Li, Wenju Zhu, Quanxiang Li, Weimin Kang   +8 more
wiley   +1 more source

Development of Hydraulic Rotary Impact Tool

Shiyou jixie, 2017
To improve the penetration rate of PDC bit in hard formation of deep well, a hydraulic rotary impact tool has been developed. The tool can generate high frequency impact in the circumferential direction and the hydraulic pulse in the axial direction ...
Zheng Ruiqiang
doaj  

The Vibration Response to the High-Pressure Gas Expansion Method: A Case Study of a Hard Rock Tunnel in China

Applied Sciences
The vibration of rock breaking in tunnel excavation may cause serious damage to nearby buildings if it is not controlled properly. With reference to a hard rock tunnel in China, the vibration response to the high-pressure gas expansion method (HPGEM), an
Huaide Peng, Jia Sheng, Qi Da, Bing Dai, Lei Zhang, Lihai Tan   +5 more
doaj   +1 more source

Feline‐Inspired Robot Enabled by Combustion‐Driven Actuators for Agile Motion and High‐Payload Obstacle Traversal

Advanced Science, EarlyView.
Inspired by nature's competitive maneuvers, this study introduces a combustion‐driven soft actuator that powers a multi‐modal “Jump‐and‐Fly Catbot” (JFC). With millisecond response, high‐force output (over 70 times its weight) and precise control (error within 5%), the robot can jump, fly, hover, and escape from challenging environments, achieving ...
Hongkuan Ma, Yang Yang, Zhiguo He, Hongliang Ren, Pengcheng Jiao   +4 more
wiley   +1 more source

Rock breaking performance of disc cutter assisted by circumferential pre-slotting

Meitan xuebao
Disc cutter has a better hard rock breaking performance due to its undercutting mode. To further improve the mechanized excavation efficiency of hard rock roadway in underground coal mine, the rock wedged performance of disc cutter assisted by ...
Hongxiang JIANG, Xiaodi ZHANG, Kuidong GAO, Ouguo WANG, Shen SONG, Hongsheng LI   +5 more
doaj   +1 more source